{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T02:09:12Z","timestamp":1789610952581,"version":"build-2803163510"},"reference-count":42,"publisher":"American Society for Microbiology","issue":"4","license":[{"start":{"date-parts":[[2017,3,24]],"date-time":"2017-03-24T00:00:00Z","timestamp":1490313600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2017,4,1]],"date-time":"2017-04-01T00:00:00Z","timestamp":1491004800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Antimicrob Agents Chemother"],"published-print":{"date-parts":[[2017,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            This study characterized cefoxitin-resistant and -susceptible\n            <jats:named-content content-type=\"genus-species\">Salmonella enterica<\/jats:named-content>\n            serovar Heidelberg strains from humans, abattoir poultry, and retail poultry to assess the molecular relationships of isolates from these sources in Qu\u00e9bec in 2012. Isolates were collected as part of the Canadian Integrated Program for Antimicrobial Resistance Surveillance (CIPARS). All isolates were subjected to antimicrobial susceptibility testing, PCR for CMY-2, pulsed-field gel electrophoresis (PFGE), and whole-genome sequencing (WGS). A total of 113\n            <jats:italic>S<\/jats:italic>\n            . Heidelberg isolates from humans (\n            <jats:italic>n<\/jats:italic>\n            = 51), abattoir poultry (\n            <jats:italic>n<\/jats:italic>\n            = 18), and retail poultry (\n            <jats:italic>n<\/jats:italic>\n            = 44) were studied. All cefoxitin-resistant isolates (\n            <jats:italic>n<\/jats:italic>\n            = 65) were also resistant to amoxicillin-clavulanic acid, ampicillin, ceftiofur, and ceftriaxone, and all contained the CMY-2 gene. PFGE analysis showed that 111\/113 (98.2%) isolates clustered together with \u226590% similarity. Core genome analysis using WGS identified 13 small clusters of isolates with 0 to 4 single nucleotide variations (SNVs), consisting of cefoxitin-resistant and -susceptible human, abattoir poultry, and retail poultry isolates. CMY-2 plasmids from cefoxitin-resistant isolates all belonged to incompatibility group I1. Analysis of IncI1 plasmid sequences revealed high identity (95 to 99%) to a previously described plasmid (pCVM29188_101) found in\n            <jats:named-content content-type=\"genus-species\">Salmonella<\/jats:named-content>\n            Kentucky. When compared to pCVM29188_101, all sequenced cefoxitin-resistant isolates were found to carry 1 of 10 possible variant plasmids. Transmission of\n            <jats:italic>S<\/jats:italic>\n            . Heidelberg may be occurring between human, abattoir poultry, and retail poultry sources, and transmission of a common CMY-2 plasmid may be occurring among\n            <jats:italic>S<\/jats:italic>\n            . Heidelberg strains with variable genetic backgrounds.\n          <\/jats:p>","DOI":"10.1128\/aac.01919-16","type":"journal-article","created":{"date-parts":[[2017,1,31]],"date-time":"2017-01-31T02:50:39Z","timestamp":1485831039000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":61,"title":["A Whole-Genome Sequencing Approach To Study Cefoxitin-Resistant Salmonella enterica Serovar Heidelberg Isolates from Various Sources"],"prefix":"10.1128","volume":"61","author":[{"given":"Romaine","family":"Edirmanasinghe","sequence":"first","affiliation":[{"name":"Department of Medical Microbiology, University of Manitoba, Winnipeg, MB, Canada"},{"name":"National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rita","family":"Finley","sequence":"additional","affiliation":[{"name":"Centre for Food-borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E. Jane","family":"Parmley","sequence":"additional","affiliation":[{"name":"Centre for Food-borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brent P.","family":"Avery","sequence":"additional","affiliation":[{"name":"Centre for Food-borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carolee","family":"Carson","sequence":"additional","affiliation":[{"name":"Centre for Food-borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sadjia","family":"Bekal","sequence":"additional","affiliation":[{"name":"Institut national de sant\u00e9 publique du Qu\u00e9bec, Montr\u00e9al, QC, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"George","family":"Golding","sequence":"additional","affiliation":[{"name":"Department of Medical Microbiology, University of Manitoba, Winnipeg, MB, Canada"},{"name":"National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael R.","family":"Mulvey","sequence":"additional","affiliation":[{"name":"Department of Medical Microbiology, University of Manitoba, Winnipeg, MB, Canada"},{"name":"National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1086\/650733"},{"key":"e_1_3_3_3_2","unstructured":"Public Health Agency of Canada. 2014. 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